Asus M3A78-VM - Manual (Page 46)

1-34 Chapter 1: Product introduction
12. LPT connector
The LPT (Line Printing Terminal) connector supports devices such as a
printer. LPT standardizes as IEEE 1284, which is the parallel port interface on
IBM PC-compatible computers.
13. Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF)
port. Connect an S/PDIF module cable to this connector, then install the
module to a slot opening at the back of the system chassis.
Ensure that the audio device of Sound playback is VIA High Definition Audio
(the name may be different based on the OS). Go to Start > Control Panel >
Sounds and Audio Devices > Sound Playback to configure the setting.
M3A78-VM
M3A78-VM Parallel Port Connector
PIN 1
LPT
SLCT PE BUSY ACK# PD
7
PD
6
PD
5
PD
4
PD
3
PD
2
PD
1
PD
0
S
T
B
#
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
SLIN
#
INIT
#
ERR#
AF
D
SPDIF_OUT
+5
V
SPDIFOU
T
GND
M3A78-VM
M3A78-VM Digital audio connector
The S/PDIF module is purchased separately.